chromeos: Cleanup class/struct fwd declarations

chromeos/dbus/cros_disks_client.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_DBUS_CROS_DISKS_CLIENT_H_
 #define CHROMEOS_DBUS_CROS_DISKS_CLIENT_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "chromeos/chromeos_export.h"
 #include "chromeos/dbus/dbus_client.h"
 #include "chromeos/dbus/dbus_client_implementation_type.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace dbus {
-class MessageReader;
 class Response;
 }
 
 // TODO(tbarzic): We should move these enums inside CrosDisksClient,
 // to be clearer where they come from. Also, most of these are partially or
 // completely duplicated in third_party/dbus/service_constants.h. We should
 // probably use enums from service_contstants directly.
 namespace chromeos {
 
 // Enum describing types of mount used by cros-disks.
@@ skipping 326 matching lines @@
   // Create() should be used instead.
   CrosDisksClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CrosDisksClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_CROS_DISKS_CLIENT_H_